Results 251 to 260 of about 4,543,511 (303)
Some of the next articles are maybe not open access.
Current density partitioning in time-dependent current density functional theory
The Journal of Chemical Physics, 2014We adapt time-dependent current density functional theory to allow for a fragment-based solution of the many-electron problem of molecules in the presence of time-dependent electric and magnetic fields. Regarding a molecule as a set of non-interacting subsystems that individually evolve under the influence of an auxiliary external electromagnetic ...
MartÃn A, Mosquera, Adam, Wasserman
openaire +2 more sources
Science, 1966
Diurnal solar heating produces an unstable warm zone just off the bottom of the inshore regions of a salt lake. The warm water rises in plumes in which brine shrimp become entrapped through apparently negative photokinetic behavior. The plumes of concentrated shrimp resemble those composed of insects in air.
openaire +2 more sources
Diurnal solar heating produces an unstable warm zone just off the bottom of the inshore regions of a salt lake. The warm water rises in plumes in which brine shrimp become entrapped through apparently negative photokinetic behavior. The plumes of concentrated shrimp resemble those composed of insects in air.
openaire +2 more sources
The Journal of Chemical Physics, 2018
It is shown that nonsymmetric second-rank current density tensors, related to the current densities induced by magnetic fields and nuclear magnetic dipole moments, are fundamental properties of a molecule. Together with magnetizability, nuclear magnetic shielding, and nuclear spin-spin coupling, they completely characterize its response to magnetic ...
openaire +2 more sources
It is shown that nonsymmetric second-rank current density tensors, related to the current densities induced by magnetic fields and nuclear magnetic dipole moments, are fundamental properties of a molecule. Together with magnetizability, nuclear magnetic shielding, and nuclear spin-spin coupling, they completely characterize its response to magnetic ...
openaire +2 more sources
Maps of current density using density-functional methods
The Journal of Chemical Physics, 2008The performance of several density-functional theory (DFT) methods for the calculation of current densities induced by a uniform magnetic field is examined. Calculations are performed using the BLYP and KT3 generalized-gradient approximations, together with the B3LYP hybrid functional. For the latter, both conventional and optimized effective potential
Soncini A. +4 more
openaire +3 more sources
IEEE Transactions on Power Apparatus and Systems, 1969
The theory, construction, and characteristics of a filament-type current density probe are described. Its application to the direct measurement of the magnitude and phase of current density in solid and liquid two-and three-dimensional geometries is presented.
P. Burke, Robert H. Alden
openaire +1 more source
The theory, construction, and characteristics of a filament-type current density probe are described. Its application to the direct measurement of the magnitude and phase of current density in solid and liquid two-and three-dimensional geometries is presented.
P. Burke, Robert H. Alden
openaire +1 more source
Journal of Membrane Science, 2002
Abstract The current density distribution in a seawater electrodialyzer is approximated by a quadratic equation. The equation is solved using a three-dimensional simultaneous equation, and the current density distribution and the coefficients expressing the current density distribution are calculated.
openaire +1 more source
Abstract The current density distribution in a seawater electrodialyzer is approximated by a quadratic equation. The equation is solved using a three-dimensional simultaneous equation, and the current density distribution and the coefficients expressing the current density distribution are calculated.
openaire +1 more source
Geological Society, London, Special Publications, 1998
Abstract High-speed, gravity-driven flows of hot particles and gas are a common and highly destructive product of explosive volcanism. They range widely in nature from expanded, turbulent suspension currents formed by lateral blasts or by the fountaining of vertical eruption columns, to highly concentrated granular avalanches ...
openaire +1 more source
Abstract High-speed, gravity-driven flows of hot particles and gas are a common and highly destructive product of explosive volcanism. They range widely in nature from expanded, turbulent suspension currents formed by lateral blasts or by the fountaining of vertical eruption columns, to highly concentrated granular avalanches ...
openaire +1 more source
Current density and temperature of high-current arcs
Electrical Engineering, 1957DURING INTERRUPTION of high-current arcs in circuit breakers and contactors, the region between the contacts must be converted from an intensely hot conducting medium to a relatively cool insulating medium. Although the cooling of low-current arcs has been explained by means of conduction, free convection, and radiation, extension of these mechanisms ...
T. H. Lee, W. R. Wilson, J. C. Sofianek
openaire +1 more source
2023
Three tests were conducted to provide basic data showing the effects of density currents for each of the three conditions in a sea-level canal connecting two seas and intercepting a channel carrying freshwater. Two cross-sectional areas of the canal were tested, 60,000 sq ft and 300,000 sq ft, with tidal ranges in one sea of 10.7 and 22 ft tested for ...
openaire +1 more source
Three tests were conducted to provide basic data showing the effects of density currents for each of the three conditions in a sea-level canal connecting two seas and intercepting a channel carrying freshwater. Two cross-sectional areas of the canal were tested, 60,000 sq ft and 300,000 sq ft, with tidal ranges in one sea of 10.7 and 22 ft tested for ...
openaire +1 more source
Proceedings of the IEEE, 1968
In a steady-state galvanomagnetic effect involving two-carrier ambipolar conduction, isotropic in the plane of conduction, the net electric current density I and the ambipolar current density of electron-hole pairs Ie-1are simply coupled if I, I, and the magnetic induction B are orthogonal. The coupled equations are derived.
openaire +1 more source
In a steady-state galvanomagnetic effect involving two-carrier ambipolar conduction, isotropic in the plane of conduction, the net electric current density I and the ambipolar current density of electron-hole pairs Ie-1are simply coupled if I, I, and the magnetic induction B are orthogonal. The coupled equations are derived.
openaire +1 more source